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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
age and castration
scrotum
Reasons for gestation length being affected
urethra
2. Contains and regulates the temp of the testes for sperm production
Jersey Cow
castration
scrotum
mare estrus
3. ~60 days before calving
dry-off time in dairy cattle
sow estrus cycle
cow estrus
estrus
4. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
seasonally polyestrous
ewe ovulation
Lutinizing Hormone in males
age and castration
5. Check feet and legs - look for masculine traits in build such as crest and muscling
Size of cow in relation to the amount of milk produced
visual evaluation (BSE)
penis sizes vs delivering methods
sow estrus
6. 1. brain function - 2. blood flow - 3. willing female
sigmoid flexure
ewe gestation
reasons for castration
what has to happen for males for copulation to occur
7. Superior genes are _______ to multiply
cow gestation
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
Hard
accessory sex glands
8. Way to know everything is alright with the breeding male
dartos muscle
purpose of Breeding Soundness Exam (BSE) for males
reasons for castration
semen evaluation (BSE)
9. Check feet and legs - look for masculine traits in build such as crest and muscling
visual evaluation (BSE)
why does the cow need fat deposits during pregnancy?
vulva
cow ovulation
10. 1-2 days
epididymis: definition - 3 parts - 4 functions
effects of estrogen
cow ovulation
ewe estrus
11. (switzerland) 2nd in size and milk production - most muscle -
Brown Swiss Cow
Follical Stimulating in females
retractor muscles
Lutinizing Hormone in males
12. (LH) stimulates the Leydig cells to produce testosterone
libido test (BSE)
1. more cost effective - 2. powdered milk is in excess production
Lutinizing Hormone in males
estrus
13. Help to signal hormone levels which we need both in the brain right next to each other.
hypothalamus and pituitary gland
prostate gland
age and castration
mare gestation
14. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
mastitis
penis proper
eminal vesicles
castration
15. Important 'landmark' during palpation
Dairy Cattle milking schedule
sow ovulation
cervix
Hard
16. Help to signal hormone levels which we need both in the brain right next to each other.
polyestrous
spermatogenesis
hypothalamus and pituitary gland
mare ovulation
17. What about the sperm for a bull which has been castrated but still has testicles?
Where livelihood is in agriculture
why does the cow need fat deposits during pregnancy?
epididymis: definition - 3 parts - 4 functions
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
18. Contains and regulates the temp of the testes for sperm production
scrotum
penis sizes vs delivering methods
Dairy Cattle Gestation
ewe estrus
19. 147 days
dry-off time in dairy cattle
penis sizes vs delivering methods
Mares
ewe gestation
20. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.
Culls bulls earlier (2 reasons)
dry-off time in dairy cattle
dry matter and water
cowper's gland
21. 24 hours before end of estrus cycle
Lutinizing Hormone in females
elastrator
sertoli cells
mare ovulation
22. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
dartos muscle
monestrous
Reasons for gestation length being affected
4 major reasons for culling dairy cows
23. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
rectal palpation (BSE)
reason for seasonal breeding periods
scrotal circumference (BSE)
Jersey Cow
24. Sperm production
spermatogenesis
Hormones from both the fetus and the mom.
seminiferous tubules
cow gestation
25. 19-23 (21) days
Jersey Cow
penis sizes vs delivering methods
Dairy Cattle Gestation
sow estrus cycle
26. Allows extension of penis without fibro-elastic penis
cremaster muscle
sigmoid flexure
Bull's fibro-elastic penis
Dairy Cattle Lactation (standard)
27. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
ewe ovulation
prostaglandin
femininity of a heifer
penis sizes vs delivering methods
28. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.
libido test (BSE)
accessory sex glands
why does the cow need fat deposits during pregnancy?
stag
29. Luteolysis happens because of the ____________ hormone
libido test (BSE)
organs used in spermatogenesis
cervix
prostaglandin
30. Duct through penis that carries sperm and urine
sertoli cells
Follical Stimulating in females
Hormones from both the fetus and the mom.
urethra
31. Start of the reproductive tract for the female. located outside of the body
colostrum
sperm cell
uterus
vulva
32. Birthing process (termination of gestation)
Parturition
dry matter and water
Blood
growth lost from castration methods (knife & band)
33. The more stressed out the male is - the less sperm he is going to produce
humans: stress level vs sperm
polyestrous
ewe's estrous cycle
sigmoid flexure
34. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
Brown Swiss Cow
Bull's fibro-elastic penis
sperm cell
ewe's estrous cycle
35. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
things to check for in a breeding soundness exam (BSE)
sow ovulation
seasonally polyestrous
Hard
36. 19-23 (21) days
retractor muscles
cow estrus cycle
growth lost from castration methods (knife & band)
Sperm growth rate
37. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
Holstein Cow
visual evaluation (BSE)
prostate gland
feeding a high producing dairy cow
38. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
growth lost from castration methods (knife & band)
hormones
Holstein Cow
cow estrus cycle
39. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
~1 month
spermatogenesis
behavioral signs of estrus
prostate gland
40. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
burdizzo
epididymis: definition - 3 parts - 4 functions
eminal vesicles
penis proper
41. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
femininity of a heifer
Mares
eminal vesicles
reasons for castration
42. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
elastrator
Follical Stimulating in males
sow estrus
Lutinizing Hormone in males
43. 45-60 days after breeding; re-breed as required
penis sizes vs delivering methods
cervix
things to check for in a breeding soundness exam (BSE)
dairy cattle pregnancy check
44. Days which have increasing daylight hours
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45. Animals which have many estrous periods per year (ex: cow - sow)
dry matter and water
polyestrous
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
visual evaluation (BSE)
46. Can survive ~7 days in cow. vast majority <48 hours
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Sperm survival specs
Hormones from both the fetus and the mom.
Jersey Cow
47. (FSH) causes egg to mature in females
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
butterfat
Follical Stimulating in females
epididymis: definition - 3 parts - 4 functions
48. ~60 days before calving
things to check for in a breeding soundness exam (BSE)
burdizzo
dry-off time in dairy cattle
urethra
49. Why does estrus happen before ovulation?
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
Blood
Grading choice
hypothalamus and pituitary gland
50. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
kidney stones also called ________ ___________ can develop in the sigmoid flexure
growth lost from castration methods (knife & band)
ewe ovulation
organs used in spermatogenesis